J103A week 2

Specific heat is measured in

• kJ/kg/K

• Kg/k/kj

• K/kg/psi

• Psi/K/mLH

3 types of heat transfer are

• Radiation, sublimation, vaporisation

• Conduction, convention, radiate

• Conduction, convection, radiation

• Convection, vaporisation, hot to cold

2 types of heat in a refrigeration system

• Latent, specific

• Sensible, specific

• Specific, sublimation

• Latent, sensible

Sensible heat is

• Measurable

• Change of state

• Hot

• kJ/kg/K

Latent heat is

• Change in temperature

• Change in state

• Who knows

• Nice

Temperature is a measure of

• Degrees

• Heat intensity

• Kelvin

• Q=mc^t

The 2 formulas for heat loads are

• Q=mc^t

  Q=mLH

• Q=mc2

  Q=mcLH

• Q=mcLH

  Q=mc2

• Q=stuff it

4 basic components of a vapour compression system are

• Coil, condenser, evaporator, blower

• Compressor, condenser, evaporator, rmd

• Compressor, condenser, evaporator, tx valve

• Condenser, evaporator, liquid receiver, tx valve

Answer explanation

RMD is correct as it can be any type of metering device not specifically a TX valve. Also if the metering device is a TX valve it will have a liquid receiver as the 5th component

How many state changes does the refrigerant go through in one cycle?

• 1

• 2

• 3

• 4

Condense is

• Liquid to vapour

• Liquid to solid

• Solid to liquid

• Vapour to liquid